Question 65585
f(x) = 5x - 4 aka ~> y = 5x - 4
x = 5y - 4
x + 4 = 5y
x/5 + 4/5 = y
.2x + .8 = f^-1(x)
{{{graph(300,300,-10,10,-10,10,x,5x - 4,.2x + .8)}}}